Specna Arms Sten MK.II(S) RETRO AEG with X-ASR MOSFET and Tracer
The Specna Arms Sten MK.II(S) RETRO AEG is a full-size electric airsoft submachine gun created for collectors, historical airsoft players and Second World War reenactors. Developed in cooperation with S&T/AGM, this replica faithfully recreates the distinctive British STEN Mk II(S), a suppressed “Special Purpose” variant designed for covert operations.
With its steel construction, minimalist silhouette and detachable aluminium suppressor, this historical airsoft gun delivers an authentic appearance while incorporating modern electronics for dependable field performance. The included tracer unit and factory-installed GATE X-ASR MOSFET make it especially effective for night games, indoor scenarios and atmospheric WWII-themed events.
Authentic WWII STEN Mk II(S) Design
The original STEN Mk II(S) was developed for the British Special Operations Executive and used during operations behind enemy lines. Its simple construction, side-mounted magazine and integral-style suppressor made it one of the most recognisable special-purpose submachine guns of the Second World War.
This Specna Arms reproduction preserves the characteristic proportions and stripped-back industrial design of the original. It is an excellent addition to any collection of WWII airsoft guns and a practical primary replica for historical skirmishes and reenactment events.
Durable Steel and Aluminium Construction
The replica is built primarily from metal, with steel used for the most important external components:
- Steel receiver
- Steel magazine well
- Steel stock
- Steel charging handle
- Steel trigger guard
- Steel mechanical sights
The detachable suppressor is manufactured from aluminium, reducing unnecessary front weight while retaining a realistic metallic finish. A fabric suppressor cover is also supplied, completing the covert-operations appearance of the Mk II(S).
Integrated Tracer for Low-Light Games
The included tracer unit illuminates compatible fluorescent BBs as they leave the barrel, making every shot visible during night games and dark indoor scenarios. It can also simulate muzzle flash, adding a dramatic visual effect and improving immersion during CQB and milsim gameplay.
A USB-C charging cable is included for recharging the tracer. For the best results, pair the replica with quality tracer airsoft BBs.
GATE X-ASR MOSFET Protection
The factory-installed GATE X-ASR MOSFET protects the electrical system, improves trigger response and helps extend the service life of the trigger contacts, wiring and battery. Built-in diagnostic indicator LEDs can also assist with identifying basic electrical faults inside the replica.
The battery compartment and X-ASR module are located beneath the removable suppressor. The replica uses a modern DEANS/T-Plug connector for efficient power transfer. Battery and charger are not included, so a compatible setup must be purchased separately from the airsoft batteries and chargers collection.
Field-Ready AEG Performance
Powered by a Version 7 gearbox, the Specna Arms Sten MK.II(S) offers dependable electric operation with adjustable hop-up and an approximately 330 mm inner barrel. A muzzle velocity of up to approximately 400 FPS gives the replica the range required for outdoor historical games, subject to local field limits and applicable national regulations.
The included 120-round mid-cap magazine provides quiet, rattle-free ammunition feeding and supports a more realistic style of play than a high-capacity magazine. Additional compatible magazines and loading accessories can be found in the airsoft magazines collection.
Who Is This Replica For?
The Specna Arms Sten MK.II(S) RETRO is an excellent choice for:
- Second World War reenactors
- Collectors of historical airsoft replicas
- Players building a British SOE loadout
- Night-game and low-light airsoft players
- Enthusiasts seeking a steel-bodied retro AEG
- Players who value simple, iconic military designs
Combining historical styling with a tracer system and modern MOSFET protection, this WWII STEN airsoft gun offers far more than display value. It is a distinctive and functional AEG ready for historical events, outdoor skirmishes and immersive night operations.
Explore more replicas from Specna Arms or browse the complete range of airsoft guns.
Package Contents
- Specna Arms Sten MK.II(S) RETRO AEG
- 120-round mid-cap magazine
- Tracer unit
- USB-C tracer charging cable
- Fabric suppressor cover
- BB speedloader
- GATE X-ASR diagnostic card
Battery and battery charger are not included.
Specifications
| Manufacturer |
Specna Arms |
| Series |
RETRO |
| Model |
Sten MK.II(S) |
| Replica type |
Electric airsoft submachine gun |
| Power source |
AEG / Electric |
| Construction |
Steel, aluminium and polymer |
| Colour |
Grey |
| Length |
97 cm |
| Weight |
2685 g |
| Gearbox |
Version 7 |
| Muzzle velocity |
Up to approximately 400 FPS |
| Fire modes |
Full-auto |
| Hop-up |
Adjustable |
| Inner barrel length |
330 mm |
| Magazine capacity |
120 rounds |
| Magazine type |
Mid-cap |
| MOSFET |
GATE X-ASR |
| Tracer included |
Yes |
| Blowback |
No |
| Quick spring change |
No |
| Battery connector |
DEANS / T-Plug |
| Battery included |
No |
| Charger included |
No |
